Shutter is opened while clicking the camera. It is a device that allows light to pass for a determined period, exposing the photographic film or... View Article
The distance of the lens from the film can be changed using a Focussing ring. The camera lens has a fixed focal length. If the distance of the... View Article
A magnifying glass forms inverted image real image virtual image Both 1 and 2 Answer: Option 3 Explanation: A magnifying glass makes use... View Article
A) Diesel B) Ethanol C) Petrol D) Natural gas The correct option is D) Natural gas. Natural gas is defined as a mixture of gases that are rich... View Article
Vitreous humour: The fluid between the retina and the lens. It is an absolutely transparent liquid. The liquid is made up of99 per cent water as... View Article
The largest farm in India is Jaisalmer Wind Park located at Amarsagar in Jaisalmer district of Rajasthan.  Its installed capacity of 1,064 MW is... View Article
Accommodation of an eye: While seeing at distant objects, eye lens become thinner and its focal length is more (about 2.5 cm). While looking at... View Article
Hydro-electric power plants converts the potential energy of stored water to kinetic energy of falling water which then aids to run the generator... View Article
Electromagnet works on the principle of magnetic effect of electric current. It is formed when a strong magnetic field is produced inside a... View Article
Answer: (C) Natural gas. Renewable energy is also known as clean energy which is obtained from natural sources and can be replenished. Solar... View Article
Solution: The pressure is given by the formula Pressure = Force/Area Substituting the value, we get P = F/A = 80 N/1.6 m2 = 50 Pa or 50 N/m2... View Article
Answer: nuclear fission Explanation: Nuclear fission is the process of splitting of a heavy nucleus into smaller nuclei. The fission process... View Article
